anko said:When you run down the 12v aux battery too far, you can see things like that happening. I have been able to run down the 12v aux battery so far (while working on my car with the 'ignition' on, but Ready light off) that I was no longer able to turn off the ignition. Illuminated ring around the power button could not be turned off. No matter how hard I tried / how long I pushed it. Nor could I lock he car. Could not even open the electric trunk to get to my jump start cables either. I think you wouldn't even be able to recharge the drive battery from the grid as the OBC ECU would not be functional.
Could it be you have an alarm system or GPS tracking device installed that takes too much from the 12v battery?
A general word of advice: when the car needs being worked on for a long period of time with the ignition on, make sure the Ready light is on. Then the 12v battery is constantly being topped up from the 300v drive battery.
Did you find out how you can turn the car off/ normally on again?